---Please take these letters to ____ post office ， Jack ---With ____ pleasure, Dad.
| A．a; the | B．the; a | C．a;/ | D．the;/ |
My pain ___________ obvious the moment I walked into the room, for the first man I met asked me pitifully:" Are you feeling all right?"
| A．must be | B．must have been |
| C．could be | D．could have been |
__________ in thought，he almost ran into the car in front of him．
| A．Losing | B．Having lost | C．Lost | D．To |
_____________to somebody，a British person often shakes hands with the stranger.
| A．Introducing | B．To introduce |
| C．To be int．roduced | D．On being introduced。 |
Do you consider it any good__________the truck again?
| A．to repair | B．repairing |
| C．repaired | D．being repairing |
We're leaving at six o'clock ,and hope_________ most of the journey by lunch time.
| A．to do | B．to have done | C．to make | D．to have made |